Copyright 2001 Diamond Systems Corp. Jupiter-MM-SIO User Manual V1.3 p. 13
6. OUTPUT VOLTAGES AND CURRENTS
Jupiter-MM-SIO provides either 4 output voltages. The outputs appear on the PC/104 bus headers J1 / J2 as well
as on the auxiliary I/O connector J5. The table below lists the maximum ratings for each output voltage.
Output
Max Current
Notes
+5V
10A
Maximum rating achieved when
only +5V output is used. Power
drawn from additional outputs will
reduce the available power on this
line.
+12V
2A
-5V
0.1A
-12V
0.5A
All outputs on the Jupiter-MM-SIO power supply are protected against overload on the outputs. The protection for
each output circuit is slightly different:
+5V
Current limited to 10A.
Above 10A the output voltage will drop to maintain maximum output of 50W.
A short circuit will shut down the entire supply.
+12V
Current limited to 2A.
Above 2A the voltage will drop to 5V and output current can increase to 10A (the 5V supply limit).
Above 10A the output voltage will continue to drop.
A short circuit will shut down the entire supply.
-5V
Current limited to 0.1A (100mA).
A short circuit will shut down the output due to thermal protection in the output regulator IC.
Note the four LEDs in the bottom left corner of the board. These LEDs indicate the status of the four output
voltages. During normal operation all four LEDs should be lit with equal intensity. If any LED is not lit or is only
dimly lit, a problem exists with that particular circuit.